Grade chair



The grade chair is used to support rebar in concrete construction.

FIG. 1 is an upper perspective view of the grade chair showing mydesign.

FIG. 2 is a front view thereof, a back view being a mirror imagethereof;

FIG. 3 is a side view thereof, an opposite side view being a mirrorimage thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom view thereof.

The ornamental design for a grade chair, as shown and described.